DaZhen Hunting Rangefinder Laser Range Finder 650 Yard Golf Monocular Portable Measure Distance Meter Tester with 20 Seconds Scan,Speed Measurement Original DaZhen Rangefinder, Professional Optical Instruments Manufacturer. A more powerful compact rangefinder made of high quality materials and water resistant body. Long range rangefinder up to 800 yards, fast measurement with 1 yard of accuracy, you will benefit a lot when in big game or hunting that need accurate long range measurements. Multiple measurement mode, Distance / Speed / Scan / Speed measurement. SCAN mode continuous ranging of moving or multiple targets optical with 6x magnification. Through the lens display, premium, ultra clear, multilayered optics with easy read, fast switching measurement unit meters/yards as you like. The laser hazard class: Class1 .Comfortable grip with ergonomic design, light weight and portable, perfect for carrying while golfing or hunting, or for measuring and surveying. Rangefinder powered by CR2 battery.